Local Calling Guide
Area code/prefix search
NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]
NXX: 433
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
603-433 | A | Portsmouth | NH | PTMONHISDS1 | 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH | 122 |
Last updated: Wed, 20 Nov 2024 21:20:06 UTC
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